Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

1. Introduction to Biochemistry

Carbohydrates

Biochemistry

1. Introduction to Biochemistry

Carbohydrates

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Multiple Choice

Which of the following represents the general formula of a carbohydrate?

C_nH_{2n}O_{2n}

C_n(H_2O)_n

C_nH_{2n}O_n

C_nH_nO_{2n}

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Verified step by step guidance

Step 1: Understand the general formula of carbohydrates. Carbohydrates are organic molecules composed of carbon (C), hydrogen (H), and oxygen (O) atoms. Their general formula is often expressed as C_n(H_2O)_n, indicating that they are hydrates of carbon.

Step 2: Analyze the given options. The problem provides four formulas: C_nH_{2n}O_{2n}, C_n(H_2O)_n, C_nH_{2n}O_n, and C_nH_nO_{2n}. You need to determine which one correctly represents the general formula of carbohydrates.

Step 3: Compare the formulas to the known carbohydrate structure. The formula C_n(H_2O)_n explicitly shows that for every carbon atom, there is one water molecule (H_2O) associated, which aligns with the definition of carbohydrates as hydrates of carbon.

Step 4: Eliminate incorrect options. For example, C_nH_{2n}O_{2n} suggests twice as many oxygen atoms as carbon atoms, which does not match the typical carbohydrate structure. Similarly, C_nH_{2n}O_n and C_nH_nO_{2n} do not align with the hydrate of carbon concept.

Step 5: Conclude that the correct formula is C_n(H_2O)_n, as it accurately represents the general structure of carbohydrates.